Broad Base.Best Solutions

® registered trademark of SGL CARBON SE effective May 2015, superceding all previous versions

Additio n alin fo rm atio n o n o urS IGRAFLEXsealin g m aterials can be fo un d in th e D o w n lo ad Cen tero n o urh o m epag e.

Graphite Materials & Systems | SGL CARBON GmbHSales Europe/Middle East/Africa | sigraflex-europe@sglgroup.comSales Americas | sigraflex-americas@sglgroup.comSales Asia/Pacific | sigraflex-asia@sglgroup.com

www.sigraflex.com | www.sglgroup.com

SIGRAFLEX Foil

Approvals

Table of Contents

D IN -D VGW type exam in atio n (D IN 3535-6) (Germ an ) ........................................................... 2

KT W g uidelin e (T ZW ) (Germ an ) .....................................................................................................3

Reactivity w ith o xyg en (BAM )........................................................................................................4

Ch em icalP ro duct T estin g an d assessm en t acco rdin g to fo o d leg islatio n

(LGA Q ualiT est Gm bH) ..................................................................................................................10

W RAS (W aterReg ulatio n s Adviso ry S ch em e) BS 69 20:2000.............................................16

M an ufacturer‘s certificate EG19 35-2004fo rfo o d co n tact m aterials............................19

DINDVGW

CERT DVGW

DIN-DVGW-Baumusterprüfzertifikat

DIN-DVGW type examination certificate

CERT

NG-5124AQ1478Registriernummer

regiStation number

Anwendungsbereichfield of application

Zertifikatinhaberowner of certificate

Vertreiberdistributor

Produktartproduct category

Produktbezeichnungproduct description

Produkte der Gasversorgungproducts of gas supply

SGL CARBON GmbHWerner-von-Siemens-Straße 18, D-86405 Meitingen

SGL CARBON GmbHWerner-von-Siemens-Straße 18, D-86405 Meitingen

Schmier-/Dicht-/Betriebsmittel: Flachdichtungswerkstoff auf Basis Graphit(5124)

Flachdichtungswerkstoff auf Basis Graphit

Modellmodel

Prüfberichtetest reports

Prüfgrundlagentest basis

©SIGRAFLEX unverstärkt

Baumusterprüfung: 14/342/5124/1 vom 27.02.2015 (EBI)

DIN 3535-6 (01.01.2011)

Ablaufdatum / AZdate of ejkpiry / file no

28.02.2020/ 14-0784-GNV

DVGW CERT GmbH ist von der DAkkS nach DIN EN 45011:1998akkreditierte Stelle für die Zertifizierung von Produkten der Energie- undWasserversorgung.

DVGW CERT GmbH is an accredited body by DAkkS according to EN45011:1998 for certification of products for energy and water supply industry.

(( DAkkSDeutscheAkkreditierungsstelleD-ZE-16028-01-01

DVGW CERT GmbHZertifizierungsstelle

Josef-Wirmer-Str. 1-3

53123 Bonn

Tel. +49 228 91Fax +49 228 91

www.dvgw-cert.com

info@dvgw-cert.com

i-993

3/24

Translationof BAM-Test Report Ref.-No. 11-2473/2007 I of May 30, 2008

Reporton Testing a Sealing Material for Reactivity with Oxygen

>< \ ! ' \• ' ' ' <• \

•)//'- \p. M /!J\./[

Bundesanstalt fürMaterialforschungund -prüfung

Reference Number 2-2776/2013 E

Copy 1. Copy of 2 Copies

Application

Customer

Order Date

Receipt of Order

SGL Carbon GmbHWerner-von-Siemens-Straße 1886405 MeitingenGermany

October 15, 2013

October 17, 2013

Test Samples SIGRAFLEX®foil (unreinforced) for use as a gasketmaterial in flanged connections in piping, valves andfittings or other components for gaseous oxygen Serviceup to 130 bar and at temperatures up to 200 0C as wellas for use as a sealing material in valves and fittings orother components at temperatures greater than 60 0C forgaseous oxygen service and for liquid oxygen service;BAM-Order No. 2.1/51 779

Receipt of Samples October 17, 2007

Test Date

Test Location

Test ProcedureAccording to

February 5, 2008 to May 30, 2008

BAM - Working Group "Safe Handling of Oxygen";building no. 41, room no. 073 and room no. 120

DIN EN 1797: 2002-02"Cryogenic Vessels - Gas/Material Compatibility"

Annex of technical bulletin M 034-1 (BGI 617-1)"List of nonmetallic materials compatible with oxygen byBAM Federal Institute for Material Research andTesting.",to pamphlet M 034 „Sauerstoff" (BGI 617)German Social Accident Insurance Institution for theraw materials and chemical industry,Edition: October 2007;according chapter 3.17 „Gleitmittel und Dichtwerkstoffe"to rule BGR 500 „Betreiben von Arbeitsmitteln" part 2,chapter 2.32 „Betreiben von Sauerstoffanlagen",Edition: March 2007.

All pressures of the report are excess pressures.This test report consists of page 1 to 6 and annex 1 to 5.This test report may only be published in füll and without any additlons. A revocable permission in writing has to beobtained from BAM for any amended reproduction of this certificate or the publication of any excerpts. The test resultsrefer excluslvely to the tested materials.

In case a German Version of the test report is available, exclusively the German Version is binding.

1 Safety in technology and chemistry

Translation of BAM Test Report 11-389/2009 Page 2 of 6 BAM-Ref.: 2-2627/2013 E

2Documents and Test Samples

The following documents and samples were submitted to BAM:

1 Test Application

1 Safety Data Sheet

16 Disks of SIGRAFLEX® foil (unreinforced)Outer-0: 140 mm; Thickness: 1 mmColor: Grey

3 Sheets of SIGRAFLEX® foil (unreinforced)150 mm x 98 mm x 1 mmColor: Grey

3Test Methods and Results

3.1 Autoqenous Ignition Temperature (AIT)

The test method is described in annex 1.

Results:

Test Initial Oxygen Final Oxygen AITNo. Pressure pi Pressure Pf [0C]

[bar] [bar]1 84 223 >5002 84 223 >5003 84 221 >5004 84 222 >5005 84 222 >500

Up to temperatures of 500 0C, no ignition of the sample could be detected in five tests with initialoxygen pressures of p, = 84 bar. The final oxygen pressure Pf was approximately 222 bar.

3.2 Artificial Aginq

The test method is described in annex 2.

Results:

Time Temperature Oxygen Pressure Mass Change[h] [0C] [bar] [%]100 225 220 0

After aging of the sealing material SIGRAFLEX® foil (unreinforced) at 220 bar oxygen pressureand 225 0C, the test sample was apparently unchanged. The mass of the test sample did notchange.

Translation of BAM Test Report 11-389/2009 Page 3 of 6 BAM-Ref.: 2-2627/2013 E

3.2.1 AIT after Artificial Aginq

The test method is described in annex 1.

Results:

Test Initial Oxygen Final Oxygen AITNo. Pressure p. Pressure Pf m

[bar] [bar]1 84 224 >5002 84 225 >5003 84 222 >5004 84 221 >5005 84 222 >500

Up to temperatures of 500 0C, no ignition of the sample could be detected in five tests with initialoxygen pressures of p, = 84 bar. The final oxygen pressure Pf was approximately 220 bar.

This shows, that, as the non-aged sample, also the aged sample did not ignite at temperaturesup to 500 "C.

3.4 Flange Test

The test method is described in annex 3.

Results:

Test No. Oxygen Pressure[bar]

Temperature[0C]

Comments

1 130 200 Only those parts of the gasketburn that project into the pipe

2 130 200 Only those parts of the gasketburn that project into the pipe

3 130 200 Only those parts of the gasketburn that project into the pipe

4 130 200 Only those parts of the gasketburn that project into the pipe

5 130 200 Only those parts of the gasketburn that project into the pipe

In five tests at 200 bar oxygen pressure and 130 0C, only those parts of the sealing materialSIGRAFLEX® foil (unreinforced) burn that project into the pipe; the fire is neither transmitted tothe steel nor does the gasket burn between the flanges. The flange remains gas-tight.

Translation of BAM Test Report 11-389/2009 Page 4 of 6 BAM-Ref.: 2-2627/2013 E

3.4 Iqnition Sensitivitv to Gaseous Oxygen Impacts

The test method is described in annex 4.

Results:

Sample Initial Oxygen Final Oxygen Reaction on impacttemperature ta Pressure pi Pressure pp

rc] [barl [bar]60 1 280 no reaction*)60 1 290 no reaction*)60 1 300 no reaction*)60 1 310 no reaction*)60 1 320 no reaction*)60 1 330 no reaction*)60 1 350 no reaction*)60 1 380 no reaction*)60 1 400 no reaction*)60 1 430 no reaction*)

60 1 450 no reaction*)60 1 450 no reaction*)

200 1 280 ignition on5. impact

200 1 270 ignition on5. impact

200 1 260 no reaction*)200 1 260 ignition on

5. impact200 1 250 ignition on

5. impact200 1 240 ignition on

5. impact200 1 230 ignition on

5. impact

200 1 220 no reaction*)200 1 220 no reaction*)

*' within a series of five consecutive impacts

In two test series, each consisting of five consecutive impacts, no reaction of the sealingmaterial SIGRAFLEX® foil (unreinforced) with oxygen was observed at a sample temperature of60 0C and an initial oxygen pressure of pi = 1 bar and a final oxygen pressure of Pf = 450 bar.At a final oxygen pressure of 450 bar, the tests had to be finished, because the BAM testapparatus has not been designed fortesting at pressures greaterthan 450 bar.

In two test series, each consisting of five consecutive impacts, no reaction of the sealingmaterial SIGRAFLEX® foil (unreinforced) with oxygen was observed at a sample temperature of200 "C and an initial oxygen pressure of pi = 1 bar and a final oxygen pressure of Pf = 220 bar.

Translation of BAM Test Report 11-389/2009 Page 5 of 6 BAM-Ref.: 2-2627/2013 E

3.5 Reactivitv with Liquid Oxyqen on Mechanical Impact

The test method is described in annex 5.

Results:

Test No. Drop Heights[m]

Impact Energy[Nm]

Reaction

1 0.67 500 no reaction

2 1.00 750 no reaction

3 1.00 750 no reaction

4 1.00 750 no reaction

5 1.00 750 no reaction

6 1.00 750 no reaction

7 1.00 750 no reaction

8 1.00 750 no reaction

9 1.00 750 no reaction

10 1.00 750 no reaction

11 1.00 750 no reaction

At drop heights of 1.00 m (impact energy 750 Nm), in ten separate tests, no reaction of the testsample with liquid oxygen could be detected.

4 Summarv and Evaluation

Up to temperatures of 500 0C, no ignition of the sealing material SIGRAFLEX® foil (unreinforced)could be detected at a final oxygen pressure pF of 220 bar.

At a temperature of 225 0C and an oxygen pressure of 220 bar, the sealing materialSIGRAFLEX® foil (unreinforced) proved to be sufficient aging resistant.

On basis of the test results and the results of the flange testing, there are no objections withregard to technical safety to use the gasket material SIGRAFLEX® foil (unreinforced) in flangeconnections made of copper, copper alloys or steel at following conditions:

Maximum Temperature Maximum Oxygen Pressure

200 0C 130 bar

This applies to flat faced flanges, male/female flanges, and flanges with tongue and groove.

According to DIN EN 1797: 2002-02 "Cryogenic Vessels - Gas/Material Compatibility", thecriterion for a positive reaction of the sample to gaseous oxygen impacts is a temperature rise ofat least 20 0C.

Translation of BAM Test Report 11-389/2009 Page 6 of 6 BAM-Ref.: 2-2627/2013 E

On basis of the above-mentioned criterion and the test results, there are no objections withregard to technical safety, to use the sealing material SIGRAFLEX® foil (unreinforced) in valvesand fittings or other components for gaseous oxygen Service at following operating conditions:

Maximum Temperature Maximum Oxygen Pressure

ooOCO 450 bar

> 60 X up to 200 0C 220 bar

According to the BAM-Standard "Testing for Reactivity with Liquid Oxygen on MechanicalImpact", described in annex 5, there are no objections with regard to technical safety to use thesealing material SIGRAFLEX® foil (unreinforced) in components and apparatuses for liquidoxygen. It is not necessary to reduce the pressure ränge of liquid oxygen because a risingpressure does not influence the reactivity of the material.

5Comments

The test results refer exclusively to the tested material.

Products on the market that contain a reference to BAM testing shall be marked accordingly tothe evaluation in the BAM test report.

Products that have been tested by us, and which are on the market, shall be marked accordingto our evaluation in the BAM test report. A label on a product saying that a BAM test has beenperformed and (or) citing our reference number, only, is not tolerable. The use of the productand its safe operating conditions must also be given.

It shall be clear that the product may only be used for gaseous oxygen Service and/or liquidoxygen Service. The maximum safe oxygen pressure of the product and its maximum usetemperature as well as other restrictions in use shall be given.

BAM Federal Institute for Materials Research and Testing12200 Berlin, December 5, 2013

Division 2.1"Gases, Gas Plants"

Dipl.-Ing. P. HartwigStudy Director "Safe Handling of Oxygen"

Copies: 1. Copy: SGL Carbon GmbH2. Copy: BAM - Division 2.1 "Gases, Gas Plants"

15/24

16/24

17/24

18/24

19/24

20/24

21/24

22/24

23/24

Herstellerbescheinigung

Manufacturer’s Certificate Die SGL CARBON GmbH als Lieferant der Graphitfolien materialien

SGL CARBON GmbH as supplier of the graphite foil materials

SIGRAFLEX® Folie C

SIGRAFLEX® Folie E

SIGRAFLEX® Folie APX

SIGRAFLEX® Folie Z

bestätigt, dass diese Materialien der Verordnung (E G) Nr. 1935/2004 über

Materialien und Gegenstände, die dazu bestimmt sind , mit Lebensmitteln

in Berührung zu kommen, entspricht.

confirms, that these materials comply with the Regulation (EC) No.

1935/2004 on materials and articles intended to come into contact with

food.

Meitingen, 24. Febr. 2014

SGL CARBON GmbH Arbeitssicherheit und Umweltschutz Environment, Health and Safety

Dr. Meyer zu Reckendorf